Plow plane



Sept. 13, 1932. E K SPYKER 1,876,782

PLOW PLANE Filed A'ug. 27. 1929 3 Sheets-Sheet l Sept. 13, 1932. E, K, SPYKER 1,876,782

PLOW PLANE Filed Aug. 27. 1929 s sheets-sheet 2 BY' l ATTORNEYS E K SPYKER Sept. 13, 1932;

PLQW PLANE Filed Aug. 27. 1929 5 Sheets-Sheet 3 INVENTOR. Za-J1'. Cf/U 76er w A TTORNEYS' Patented Sept. 13, 1932 UNHTED/ STATES EPRAIM .'K. SPYKER, yOF SACRAMENTO, CALIFORNIA PLOW APLANE Application led August 27, 1929. Serial No. 388,790. I i

This invention relates to certain new and useful improvements in plow planes, such as are used by carpenters and cabinet makers for cutting different kinds of grooves, fil-- listering, dadoing, or rabbeting and the pri- Y mary object of the invention is to provide a plane stock wherein different sizes of chisels may be used. f 1 f Y A further object of the invention is to provide a plow plane of the above type with a guide frame adjustable thereon to-be moved along the edge of the work for guiding the plane in its cutting or shaving operation, toi gether with a depth gage for regulatingthe depth of cut of the plane.

A still further object of the invention is to provide a that is capab e of cross-grain work by the provision of scribing points at the forward end of the plow frame separated a distance equal to the width of the cutting end of the chisel or bit to permit an even cross-grain cut or shave and eliminating the possibility v of a ragged edge at opposite sides of the chisel or bit.

Vith the above and other objects in view that will become apparent as the nature of the invention is better understood, the same consists yin the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying draw-` ings and claimed.

VIn the drawings i f Figure 1 1s a 51de elevatlonal view of a "N plow plane constructed in accordance with the present invention; l

Figure 2 is a top plan view of the same; Figure 3 is a vertical longitudinal sectional view taken on line 3 3 of Figure 2, showing the forwardlyv positioned scriber for crossgrain cutting with fa chisel mounted in the frame of the plane together with the depth gage plate adjustable on the frame of the plane; f

Figure 4 is a vertical longitudinal sectional view `taken on line 4-4 of Figure 2; I

Figure 5 is a bottom plan view of the plane with parts removed Vand showing the guide frame in extended positions; and also illustrat'ed by dotted lines in folded positions.

low plane ofthe above Vtype* Figure 6 is a perspective view of the ch'isel. or bit rest removed from the plane frame Figure 7 is a front elevational view of the plane;

' Figure 8 is a perspective view of the depth gage plate removed from the plane; and

Figure 9 is a perspective view of the for# ward end plate of the frame of the plane.

. .The plow kplane stock or frame 'com-prises. a bottom plate or wall 11 carrying vertical side walls 12 formed intermediate their ends with substantially triangular-shaped .portions 13 of increased heightv and shorter yrear portions 14, the forward ends of the side wall portions 12 being'con'nected by a'forward vertical cross-wall 15 set Vinwardly ofthe Y terminal ends of said portions 12 and having a lower cross foot portion 16 Hush with the wall l11 of the plane. A vertical cross wall 17 is disposed between the terminal forward ends of the side walls 12 and is anchored in position by the screws'lS passing through openings 18a shown in Figures 3 and 9 with a vertical channel or space remainingbetween the cross walls 15 and 17. The opposed faces of the cross rwalls 15 and 17 are vertically' corrugated or grooved as at 19 for the ses4 lective reception of cutting blades 2O spaced apart a distance substantially equal to the width'of the chisel or bit of the plane for scribing lines on cross grain work so that' the chisel or bit will out a groove and leave a clean straight edge, which operation willbe later described in'detail. The handle car# ried by the rear end of the bottom plate or y wall 11 shown in Figure 3 comprises a socket member 21 rising from thebottom wall' 11 for receiving the tenon 22 on the handle porf tion 23 to be retained therein by the cross screw 24.

A chisel or bit rest is mounted upon the bottom wall 11 shown in Figures 3 and 4 and comprises, as shown in detail in Figure'G, a vertical 'rear wall 25 and a forwardly inclined wall 26, the two walls being slotted as at 27 with a part of the vertical rear wall cut away as at 2S providing a clearance for other structures, the rest being retained in pesition upon the bottom wall 11v by the attach-k ing screw 29 shown` in Figure 4 passing through the apertured lug on the vertical rear wall 25 of the rest and engaging the upstruck abutment 31 upon the bottom wall 11, the rest being positioned between the side wall portions 13 of the plane with the forward inclined wall 26 positioned rearwardly of the cross wall 32 connecting the forward portions of the side wall sections 13, and providing a space for the mounting of a. chisel or bit. Y

A depth gage is associated with the plane and as shown in Figures 3 and 8 comprises an elongated gage plate 33 attached to the frame of the plane and extending downwardly through the longitudinal slot 34 formed in the bottom wall 11. The forward end of the gage plate 33 is inclined as at 35 at the same angle as the forward wall 26 of the chisel or bit rest and has a cooperating gage foot 36 disposed at the same angle as the inclined end with the lower edge thereof in the same plane as the lower edge of the gage plate 33 and connected thereto by the laterall offset arm 37. A binding screw 41 passes tlirough an inclined slot 42 in the side wall 12 of the plane as shown in Figures 3 and 4 and enters the aperture aY in the arm 37 to aid in holding the gage plate in position. An angle lug 43 carried by a centrally raised portion of the gage plate 33 has a screw 44 swiveled therein that threads into block carried by the base pla-te 11 the knurled finger piece 44a being provided for adjusting the gage plate relative to the bottom wall of the plane. Upon loosening the screw 41, the gage plate 33 and gage foot 36 are adjusted y the screw 44 to vary the depending pro- 'ection of the lower edge of the gage plate and foot relative to the bottom face of the wall 11, the screw 41 moving through the slot 42 and when the proper adjustment has been accomplished, the screw 41 is tightened and the gage plate and gage foot held rigidly positioned, the binding screw 52 threaded inwardly through the wall 14 holding the rear end of the gage plate 33 in position. A cutting device such as a bit or chisel 45a is mounted with the bit end thereof upon the forward wall 26 of the rest and rearwardly of the foot 36. A filler bar 47 a is inserted in chosen ones of the registering grooves 26a formed in the opposed faces over substantially one half the width of the rest wall 26 and cross bar 32 providing an abutment for one side of the chisel while the other side thereof is engaged by the screw 47 threaded through the adjacent side wall 13 of the frame, the forward side of the chisel being further anchored by the screw 48 threaded through the cross wall 32. A spring plate 49 is anchored as at5() at the upper end of the cross wall 32 with the lower angle end 49a directed toward and engaging the chisel blade to cause the shavings to rise upwardly through the plane frame and to be removed from the rear of the throat through which the bit or chisel blade extends, the tension of the spring plate 49 being controlled by a knurled nut 51 threaded upon the screw 48 and engaging the spring plate shown in Figure 3. The bit or chisel is thereby rigidly supported as is also the gage plate 33, an added locking feature for the gage plate including the screw bolt 52 threaded through a side wall portion 14 of the plane frame into end contact with the gage plate as shown in Figures 2 and 3.

A guide frame is associated with the plane and comprises side bars 53 and 54 having hinged extensions 55 connected thereto as at 56, with the side bar 53 and its hinged extension 55 passing through openings in the side walls 12 at the front end of the plane and retained in adjusted position by the screw 57 threaded through the lug 58 at the upper end of the front cross wall 15, while the other side bar54 and its hinged extension 55 passes through a cross opening in the socket section 21 of the handle and-is retained in adjusted position by the screw stud 58a. rl`he ends of the side bar extensions 55 are cut away as at 59 upon opposite sides to cause the ends to overlap when moved upon their hinged connections 56 as shown in Figure 7, when the guide frameis folded adjacent the plane. If desired, additional extensions 55a may be attached to the free ends of the side bar extensions 55. The outer Vends of the side bars 53 and 54 are connected by a cross bar 60 provided with a hand grip 61 intermediate its ends, while a depending angle arm 62 is formed at each end of the cross bar 6() to which a guide bar 63 is hingedly attached to be moved into engagement with the edge of the work being grooved. rlhe side bar 63 moves into engagement with the straightv edge of the work with the plane resting thereon, the plane being adjustable tovposition the bit or chisel 45a at the proper point forforming the desired groove or the,

like and the parts are so retained by the tightening screws 57 and 58a for the guide frame. The gage plate 33 is adjustable as previously described for `determining the depth of cut and in doing cross-grain work, the scribers 20 are lowered below the bottom `wall 11 of the plane to form side cuts at opposite sides of the bit or chisel.

From the above detailed description of the invention, it is believed that the construction and operation thereof will at once be apparent, and'while there is herein shown and described the preferred embodiment of the invention, it is nevertheless to be understood that 'minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

I claim p- 1. In a plane of the character described, a frame,` a tool rest of inverted substantially V-form mounted on the frame and having slots in the spaced side walls lthereof and said frame being longitudinally slotted in alinement with the rest slots, and a depth gage comprising a blade extending through the rest slots and dependingy through thel frame slot.l

2. In a plane of the character described, a frame, a tool rest of inverted substantially 'i3 `i/-form mounted on the frame and having slots in the spaced side walls thereof and said frame being longitudinally slotted in alinement with the rest slots, a depth gage comprising a blade extending through the 13 rest slots and depending through the fram-e slot, and an inclined slot and pin connection 1 between the forward end of the gage blade and frame.

3. In a plane of the character described, a

S3 frame, a tool rest of inverted substantially V-fcrm mounted on the frame and having slots in the spaced side walls thereof and said fram-e being longitudinally slotted in alinement with the rest slots, a depth gage com- 25 prising a blade extending through the rest slots and depending through the frame slot, an inclined slot and pin connection between the forward end of the gage blade and frame, and an adjusting screw associated with the C9 frame and gage blade for raising and lowering the blade.

4. In a plane of the character described, a frame, a tool rest of inverted substantially V-form mounted on the frame and having 55 slots in the spaced side walls thereof and said frame being longitudinally slotted in alinement with the rest slots, a depth gage comprising a blade extending through the rest slots and depending through the frame 49 slot, an inclined slot and pin connection between the forward end of the gage blade and frame, an angle lug carried by the gage blade,

a screw swiv'elled in the angle lug and a block on the frame into which the screw is threaded "l5 for raising and lowering the gage bla-de.

In testimony whereof I afiiX my signature.

EPHRAIM K. SPYKER. 

